Quote:
Originally Posted by Cbtech
You get an awesome sound when you remove the muffler and go with the short tail set up. the only caveat to that is that you lose back pressure causing the car to run rich and you lose low end torque.
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I call shenanigans. The ECU can handle the change in exhaust. Nissan has always used robust maps. MAF allows this. Changing BOTH intake exhaust will exceed the ECU latitude, though.
My ARK exhaust caused no driveability problems or change in gas mileage. It did cause a slight drop in low-end torque but that's because exhaust
velocity dropped in that rpm range. I haven't had the car tuned.